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Pension and Other Postretirement Benefits (Details 4) - Pension Plans - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
United Kingdom
Pension and Other Postretirement Benefits
Fair value of plan assets	$ 345	$ 360	$ 320
United Kingdom | Pooled Equity Funds
Pension and Other Postretirement Benefits
Fair value of plan assets	14
United Kingdom | Defined Benefit Plan, Cash [Member]
Pension and Other Postretirement Benefits
Fair value of plan assets		13
United Kingdom | Pooled Target Return Funds
Pension and Other Postretirement Benefits
Fair value of plan assets		44
United Kingdom | Fixed income: Pooled UK government index-linked securities
Pension and Other Postretirement Benefits
Fair value of plan assets		54
United Kingdom | Fixed income: Pooled fixed income funds
Pension and Other Postretirement Benefits
Fair value of plan assets		74
United Kingdom | Liability-driven investment funds
Pension and Other Postretirement Benefits
Fair value of plan assets	52	68
United Kingdom | Pooled UK Government Securities Funds Index-Linked Securities
Pension and Other Postretirement Benefits
Fair value of plan assets	78
United Kingdom | Pooled Global Debt Funds
Pension and Other Postretirement Benefits
Fair value of plan assets	124
United Kingdom | Pooled Diversified Funds
Pension and Other Postretirement Benefits
Fair value of plan assets	31	54
United Kingdom | Cash and Cash Funds
Pension and Other Postretirement Benefits
Fair value of plan assets	2
United Kingdom | Pooled Property Funds
Pension and Other Postretirement Benefits
Fair value of plan assets	43	47
United Kingdom | Receivable From Redemption
Pension and Other Postretirement Benefits
Fair value of plan assets	1	6
United Kingdom | Fair Value, Inputs, Level 1, 2 and 3 | Defined Benefit Plan, Assets Before Receivables, Net
Pension and Other Postretirement Benefits
Fair value of plan assets	301	307
United Kingdom | Quoted Prices in Active Markets (Level 1) | Defined Benefit Plan, Assets Before Receivables, Net
Pension and Other Postretirement Benefits
Fair value of plan assets	1	13
United Kingdom | Quoted Prices in Active Markets (Level 1) | Pooled Equity Funds
Pension and Other Postretirement Benefits
Fair value of plan assets	0
United Kingdom | Quoted Prices in Active Markets (Level 1) | Defined Benefit Plan, Cash [Member]
Pension and Other Postretirement Benefits
Fair value of plan assets		13
United Kingdom | Quoted Prices in Active Markets (Level 1) | Pooled Target Return Funds
Pension and Other Postretirement Benefits
Fair value of plan assets		0
United Kingdom | Quoted Prices in Active Markets (Level 1) | Fixed income: Pooled UK government index-linked securities
Pension and Other Postretirement Benefits
Fair value of plan assets		0
United Kingdom | Quoted Prices in Active Markets (Level 1) | Fixed income: Pooled fixed income funds
Pension and Other Postretirement Benefits
Fair value of plan assets		0
United Kingdom | Quoted Prices in Active Markets (Level 1) | Liability-driven investment funds
Pension and Other Postretirement Benefits
Fair value of plan assets	0	0
United Kingdom | Quoted Prices in Active Markets (Level 1) | Pooled UK Government Securities Funds Index-Linked Securities
Pension and Other Postretirement Benefits
Fair value of plan assets		0
United Kingdom | Quoted Prices in Active Markets (Level 1) | Pooled Global Debt Funds
Pension and Other Postretirement Benefits
Fair value of plan assets	0
United Kingdom | Quoted Prices in Active Markets (Level 1) | Pooled Diversified Funds
Pension and Other Postretirement Benefits
Fair value of plan assets	0	0
United Kingdom | Quoted Prices in Active Markets (Level 1) | Cash and Cash Funds
Pension and Other Postretirement Benefits
Fair value of plan assets	1
United Kingdom | Significant Other Observable Inputs (Level 2) | Defined Benefit Plan, Assets Before Receivables, Net
Pension and Other Postretirement Benefits
Fair value of plan assets	300	294
United Kingdom | Significant Other Observable Inputs (Level 2) | Pooled Equity Funds
Pension and Other Postretirement Benefits
Fair value of plan assets	14
United Kingdom | Significant Other Observable Inputs (Level 2) | Defined Benefit Plan, Cash [Member]
Pension and Other Postretirement Benefits
Fair value of plan assets		0
United Kingdom | Significant Other Observable Inputs (Level 2) | Pooled Target Return Funds
Pension and Other Postretirement Benefits
Fair value of plan assets		44
United Kingdom | Significant Other Observable Inputs (Level 2) | Fixed income: Pooled UK government index-linked securities
Pension and Other Postretirement Benefits
Fair value of plan assets		54
United Kingdom | Significant Other Observable Inputs (Level 2) | Fixed income: Pooled fixed income funds
Pension and Other Postretirement Benefits
Fair value of plan assets		74
United Kingdom | Significant Other Observable Inputs (Level 2) | Liability-driven investment funds
Pension and Other Postretirement Benefits
Fair value of plan assets	52	68
United Kingdom | Significant Other Observable Inputs (Level 2) | Pooled UK Government Securities Funds Index-Linked Securities
Pension and Other Postretirement Benefits
Fair value of plan assets	78
United Kingdom | Significant Other Observable Inputs (Level 2) | Pooled Global Debt Funds
Pension and Other Postretirement Benefits
Fair value of plan assets	124
United Kingdom | Significant Other Observable Inputs (Level 2) | Pooled Diversified Funds
Pension and Other Postretirement Benefits
Fair value of plan assets	31	54
United Kingdom | Significant Other Observable Inputs (Level 2) | Cash and Cash Funds
Pension and Other Postretirement Benefits
Fair value of plan assets	1
United Kingdom | Significant Unobservable Inputs (Level 3) | Defined Benefit Plan, Assets Before Receivables, Net
Pension and Other Postretirement Benefits
Fair value of plan assets	0	0
United Kingdom | Significant Unobservable Inputs (Level 3) | Pooled Equity Funds
Pension and Other Postretirement Benefits
Fair value of plan assets	0
United Kingdom | Significant Unobservable Inputs (Level 3) | Defined Benefit Plan, Cash [Member]
Pension and Other Postretirement Benefits
Fair value of plan assets		0
United Kingdom | Significant Unobservable Inputs (Level 3) | Pooled Target Return Funds
Pension and Other Postretirement Benefits
Fair value of plan assets		0
United Kingdom | Significant Unobservable Inputs (Level 3) | Fixed income: Pooled UK government index-linked securities
Pension and Other Postretirement Benefits
Fair value of plan assets		0
United Kingdom | Significant Unobservable Inputs (Level 3) | Fixed income: Pooled fixed income funds
Pension and Other Postretirement Benefits
Fair value of plan assets		0
United Kingdom | Significant Unobservable Inputs (Level 3) | Liability-driven investment funds
Pension and Other Postretirement Benefits
Fair value of plan assets	0	0
United Kingdom | Significant Unobservable Inputs (Level 3) | Pooled UK Government Securities Funds Index-Linked Securities
Pension and Other Postretirement Benefits
Fair value of plan assets		0
United Kingdom | Significant Unobservable Inputs (Level 3) | Pooled Global Debt Funds
Pension and Other Postretirement Benefits
Fair value of plan assets	0
United Kingdom | Significant Unobservable Inputs (Level 3) | Pooled Diversified Funds
Pension and Other Postretirement Benefits
Fair value of plan assets	0	0
United Kingdom | Significant Unobservable Inputs (Level 3) | Cash and Cash Funds
Pension and Other Postretirement Benefits
Fair value of plan assets	0
United Kingdom | Fair Value Measured at Net Asset Value Per Share
Pension and Other Postretirement Benefits
Fair value of plan assets	344	354
North America
Pension and Other Postretirement Benefits
Fair value of plan assets	299	313	$ 273
North America | Cash and cash equivalents
Pension and Other Postretirement Benefits
Fair value of plan assets	2	1
North America | Short-Term Investments
Pension and Other Postretirement Benefits
Fair value of plan assets		3
North America | Equity mutual funds: Index equity
Pension and Other Postretirement Benefits
Fair value of plan assets	41	35
North America | Pooled Equity Funds
Pension and Other Postretirement Benefits
Fair value of plan assets		16
North America | Fixed income: Other
Pension and Other Postretirement Benefits
Fair value of plan assets	10	8
North America | Fixed income: Government and agency securities
Pension and Other Postretirement Benefits
Fair value of plan assets	90	88
North America | Fixed income: Corporate bonds and notes
Pension and Other Postretirement Benefits
Fair value of plan assets	100	101
North America | Fixed income: U.S.Treasury bonds and notes
Pension and Other Postretirement Benefits
Fair value of plan assets	14	17
North America | Fixed income mutual funds
Pension and Other Postretirement Benefits
Fair value of plan assets	42	45
North America | Accruals and payables—net
Pension and Other Postretirement Benefits
Fair value of plan assets	0
North America | Accruals and payables—net
Pension and Other Postretirement Benefits
Fair value of plan assets		(1)
North America | Fair Value, Inputs, Level 1, 2 and 3 | Defined Benefit Plan, Assets Before Receivables, Net
Pension and Other Postretirement Benefits
Fair value of plan assets	299	314
North America | Quoted Prices in Active Markets (Level 1) | Defined Benefit Plan, Assets Before Receivables, Net
Pension and Other Postretirement Benefits
Fair value of plan assets	98	64
North America | Quoted Prices in Active Markets (Level 1) | Cash and cash equivalents
Pension and Other Postretirement Benefits
Fair value of plan assets	1	0
North America | Quoted Prices in Active Markets (Level 1) | Short-Term Investments
Pension and Other Postretirement Benefits
Fair value of plan assets		1
North America | Quoted Prices in Active Markets (Level 1) | Equity mutual funds: Index equity
Pension and Other Postretirement Benefits
Fair value of plan assets	41	35
North America | Quoted Prices in Active Markets (Level 1) | Pooled Equity Funds
Pension and Other Postretirement Benefits
Fair value of plan assets		0
North America | Quoted Prices in Active Markets (Level 1) | Fixed income: Other
Pension and Other Postretirement Benefits
Fair value of plan assets	0	0
North America | Quoted Prices in Active Markets (Level 1) | Fixed income: Government and agency securities
Pension and Other Postretirement Benefits
Fair value of plan assets	0	0
North America | Quoted Prices in Active Markets (Level 1) | Fixed income: Corporate bonds and notes
Pension and Other Postretirement Benefits
Fair value of plan assets	0	0
North America | Quoted Prices in Active Markets (Level 1) | Fixed income: U.S.Treasury bonds and notes
Pension and Other Postretirement Benefits
Fair value of plan assets	14	17
North America | Quoted Prices in Active Markets (Level 1) | Fixed income mutual funds
Pension and Other Postretirement Benefits
Fair value of plan assets	42	11
North America | Significant Other Observable Inputs (Level 2) | Defined Benefit Plan, Assets Before Receivables, Net
Pension and Other Postretirement Benefits
Fair value of plan assets	201	250
North America | Significant Other Observable Inputs (Level 2) | Cash and cash equivalents
Pension and Other Postretirement Benefits
Fair value of plan assets	1	1
North America | Significant Other Observable Inputs (Level 2) | Short-Term Investments
Pension and Other Postretirement Benefits
Fair value of plan assets		2
North America | Significant Other Observable Inputs (Level 2) | Equity mutual funds: Index equity
Pension and Other Postretirement Benefits
Fair value of plan assets	0	0
North America | Significant Other Observable Inputs (Level 2) | Pooled Equity Funds
Pension and Other Postretirement Benefits
Fair value of plan assets		16
North America | Significant Other Observable Inputs (Level 2) | Fixed income: Other
Pension and Other Postretirement Benefits
Fair value of plan assets	10	8
North America | Significant Other Observable Inputs (Level 2) | Fixed income: Government and agency securities
Pension and Other Postretirement Benefits
Fair value of plan assets	90	88
North America | Significant Other Observable Inputs (Level 2) | Fixed income: Corporate bonds and notes
Pension and Other Postretirement Benefits
Fair value of plan assets	100	101
North America | Significant Other Observable Inputs (Level 2) | Fixed income: U.S.Treasury bonds and notes
Pension and Other Postretirement Benefits
Fair value of plan assets	0	0
North America | Significant Other Observable Inputs (Level 2) | Fixed income mutual funds
Pension and Other Postretirement Benefits
Fair value of plan assets	0	34
North America | Significant Unobservable Inputs (Level 3) | Defined Benefit Plan, Assets Before Receivables, Net
Pension and Other Postretirement Benefits
Fair value of plan assets	0	0
North America | Significant Unobservable Inputs (Level 3) | Cash and cash equivalents
Pension and Other Postretirement Benefits
Fair value of plan assets	0	0
North America | Significant Unobservable Inputs (Level 3) | Short-Term Investments
Pension and Other Postretirement Benefits
Fair value of plan assets		0
North America | Significant Unobservable Inputs (Level 3) | Equity mutual funds: Index equity
Pension and Other Postretirement Benefits
Fair value of plan assets	0	0
North America | Significant Unobservable Inputs (Level 3) | Pooled Equity Funds
Pension and Other Postretirement Benefits
Fair value of plan assets		0
North America | Significant Unobservable Inputs (Level 3) | Fixed income: Other
Pension and Other Postretirement Benefits
Fair value of plan assets	0	0
North America | Significant Unobservable Inputs (Level 3) | Fixed income: Government and agency securities
Pension and Other Postretirement Benefits
Fair value of plan assets	0	0
North America | Significant Unobservable Inputs (Level 3) | Fixed income: Corporate bonds and notes
Pension and Other Postretirement Benefits
Fair value of plan assets	0	0
North America | Significant Unobservable Inputs (Level 3) | Fixed income: U.S.Treasury bonds and notes
Pension and Other Postretirement Benefits
Fair value of plan assets	0	0
North America | Significant Unobservable Inputs (Level 3) | Fixed income mutual funds
Pension and Other Postretirement Benefits
Fair value of plan assets	$ 0	$ 0

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+ References

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